L lolzlolz Member Joined Jan 3, 2022 Messages 67 Gender Female HSC 2022 Mar 5, 2022 #1 can anyone do this maths question please? thanks )
icycledough Well-Known Member Joined Aug 5, 2021 Messages 784 Gender Male HSC 2020 Mar 5, 2022 #2 So with this one, x - 1 = sqrt ((x - 3)(x + 4)) Squaring both sides, (x - 1)^2 = (x - 3)(x + 4) x^2 - 2x + 1 = x^2 + x - 12 -3x = -13, x = 13/3
So with this one, x - 1 = sqrt ((x - 3)(x + 4)) Squaring both sides, (x - 1)^2 = (x - 3)(x + 4) x^2 - 2x + 1 = x^2 + x - 12 -3x = -13, x = 13/3